What is "fenestrae"

Fenestra \Fe*nes"tra\, n.; pl. Fenestr[ae]. [L., a window.] (Anat.) A small opening; esp., one of the apertures, closed by membranes, between the tympanum and internal ear.

n. (plural of fenestra English)

See fenestra

1. n. a small membrane-covered opening (especially one in the bone between the middle and inner ear)

2. [also: fenestrae (pl)]